Gallery: DHS chief: Travel, immigration ban should have been delayed

Homeland Security Secretary John Kelly listens to a question while testifying on Capitol Hill in Washington, Tuesday, Feb. 7, 2017, before the House Homeland Security Committee. This is Kelly's first public appearance before lawmakers who are sure to press him for details about the Trump administration's contentious rollout of a travel and refugee ban. (AP Photo/Andrew Harnik)

Homeland Security Secretary John Kelly testifies on Capitol Hill in Washington, Tuesday, Feb. 7, 2017, before the House Homeland Security Committee. This is Kelly's first public appearance before lawmakers who are sure to press him for details about the Trump administration's contentious rollout of a travel and refugee ban. (AP Photo/Andrew Harnik)

Homeland Security Secretary John Kelly smiles while testifying on Capitol Hill in Washington, Tuesday, Feb. 7, 2017, before the House Homeland Security Committee. This is Kelly's first public appearance before lawmakers who are sure to press him for details about the Trump administration's contentious rollout of a travel and refugee ban. (AP Photo/Andrew Harnik)

Homeland Security Secretary John Kelly listens while testifying on Capitol Hill in Washington, Tuesday, Feb. 7, 2017, before the House Homeland Security Committee. This is Kelly's first public appearance before lawmakers who are sure to press him for details about the Trump administration's contentious rollout of a travel and refugee ban. (AP Photo/Andrew Harnik)

Homeland Security Secretary John Kelly listens to a question while testifying on Capitol Hill in Washington, Tuesday, Feb. 7, 2017, before the House Homeland Security Committee. This is Kelly's first public appearance before lawmakers who are sure to press him for details about the Trump administration's contentious rollout of a travel and refugee ban. (AP Photo/Andrew Harnik)

Homeland Security Secretary John Kelly testifies on Capitol Hill in Washington, Tuesday, Feb. 7, 2017, before the House Homeland Security Committee. This is Kelly's first public appearance before lawmakers who are sure to press him for details about the Trump administration's contentious rollout of a travel and refugee ban. (AP Photo/Andrew Harnik)

Homeland Security Secretary John Kelly smiles while testifying on Capitol Hill in Washington, Tuesday, Feb. 7, 2017, before the House Homeland Security Committee. This is Kelly's first public appearance before lawmakers who are sure to press him for details about the Trump administration's contentious rollout of a travel and refugee ban. (AP Photo/Andrew Harnik)

Homeland Security Secretary John Kelly listens while testifying on Capitol Hill in Washington, Tuesday, Feb. 7, 2017, before the House Homeland Security Committee. This is Kelly's first public appearance before lawmakers who are sure to press him for details about the Trump administration's contentious rollout of a travel and refugee ban. (AP Photo/Andrew Harnik)